How to get these effects

[cheesecakevonmuffin]

Hi, I would like to know how to make these water colour effects? 
I've tried several brushes and even tweaked my own brush settings and used filters and I still didn't get the way I want it to.
Pls help

[Espermaschine]

These are probably real watercolours on paper, scanned so they can be used as a texture.

Using a brush is a good way of approaching this, but as you have already found out, you need the perfect one
Layering different levels of opacity with a soft brush might do the trick for the pink example. It doesnt look too far away from your regular Solid Noise.

Filtering can mimick watercolours. Maybe somebody has found a routine that works, i dont know of any.

There are a few places on the web where you can get free watercolour textures (use your search engine, i think texturemate had a few...).
I know that Teela Cunningham has a channel on youtube for making this kind of stuff (although for PS) and gave away free watercolour textures on her website.

For everything else try stock sites and pay.


EDIT:
added a few resources:

https://chrisdesign.deviantart.com/art/w...-326284761 (brush)
https://www.youtube.com/watch?v=zxDHR-cwy5k (Gimp tutorial by Chris Fiedler)

https://every-tuesday.com/how-to-add-wat...typography (Teela's site and freebie)

https://youtu.be/T2wiU5tyfxo (PS tutorial)

http://www.texturemate.com/content/free-...122010-005 (texture)

[rich2005]

Seeing the color profile those images come with, guessing from some version of PS

I can not think of any easy way(s) in Gimp, but then I am not an artist. My stab at it.

The pink swirly thing might start life as a circular selection, painted in with pinks then the iWarp filter applied. It is a very sensitive filter however, not easy to use.



The grungy image? Very hands on. Build up from layers, texture can come from the old Gimppressionist filter.

[Espermaschine]

Expanding on rich's idea. How about using a watercolour texture with a layermask ?
The layermask is made with the coffestain filter (Filter - Decor - Coffee Stain) and treated with the Whirl and Pinch Filter, plus a bit of manual smudging.

Problem is that the coffestain filter produces only random shapes.

[Espermaschine]

I was able to come up with this.
The basic idea was to use a filter called ZigZag some guy posted on gimpchat ages ago.  
It imitates the PS filter of the same name.

Got the inspiration from a logo of a record label that uses an S with this filter, and it rips the seams, just like OP's logo.

   

I made a Solid Noise layer with low values (1,2px) to get a texture with light and dark areas, then cut out a circular shape and applied the ZigZag filter, Pond Ripples Style 33/11.
Appplied as a layermask to blend two shades of pink and then touched up with Chris F's watercolour brush.
Did a few more "artistic" stuff, that is hard to explain but you get the basic workflow.